using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.TreeView treeView1;
    ImageList il = new ImageList();
    public Form1() {
        this.treeView1 = new System.Windows.Forms.TreeView();
        this.SuspendLayout();
        this.treeView1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
           | System.Windows.Forms.AnchorStyles.Left)
           | System.Windows.Forms.AnchorStyles.Right);
        this.treeView1.Font = new System.Drawing.Font("Courier New", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
        this.treeView1.HotTracking = true;
        this.treeView1.ImageIndex = -1;
        this.treeView1.Indent = 30;
        this.treeView1.ItemHeight = 30;
        this.treeView1.LabelEdit = true;
        this.treeView1.Location = new System.Drawing.Point(8, 16);
        this.treeView1.SelectedImageIndex = -1;
        this.treeView1.Size = new System.Drawing.Size(360, 272);

        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(376, 309);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                      this.treeView1});
        this.Text = "TreeView Control";
        this.Load += new System.EventHandler(this.Form1_Load);
        this.ResumeLayout(false);

    }
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }

    private void Form1_Load(object sender, System.EventArgs e) {
        il.Images.Add(new Icon("1.ICO"));
        il.Images.Add(new Icon("2.ICO"));
        il.Images.Add(new Icon("3.ICO"));
        il.Images.Add(new Icon("4.ICO"));
        treeView1.ImageList = il;

        TreeNode rootNode = treeView1.Nodes.Add("USA");
        rootNode.ImageIndex = 0;

        TreeNode states1 = rootNode.Nodes.Add("a");
        states1.ImageIndex = 1;
        TreeNode states2 = rootNode.Nodes.Add("b");
        states2.ImageIndex = 1;
        TreeNode states3 = rootNode.Nodes.Add("c");
        states3.ImageIndex = 1;
        TreeNode states4 = rootNode.Nodes.Add("d");
        states4.ImageIndex = 1;

        TreeNode child = states1.Nodes.Add("A");
        child.ImageIndex = 2;
        child = states1.Nodes.Add("e");
        child.ImageIndex = 2;
        child = states1.Nodes.Add("f");
        child.ImageIndex = 2;

        child = states2.Nodes.Add("g");
        child.ImageIndex = 2;
        child = states2.Nodes.Add("h");
        child.ImageIndex = 2;
        child = states2.Nodes.Add("i");
        child.ImageIndex = 2;

        child = states3.Nodes.Add("j");
        child.ImageIndex = 2;
        child = states3.Nodes.Add("k");
        child.ImageIndex = 2;
        child = states3.Nodes.Add("l");
        child.ImageIndex = 2;

        child = states4.Nodes.Add("m");
        child.ImageIndex = 2;
        child = states4.Nodes.Add("n");
        child.ImageIndex = 2;
        child = states4.Nodes.Add("o");
        child.ImageIndex = 2;
    }
}

    

   


   using System;
   using System.Drawing;
   using System.Collections;
   using System.ComponentModel;
   using System.Windows.Forms;
   using System.Data;

   public class Unicode : System.Windows.Forms.Form {
      System.Windows.Forms.Label myLabel = new System.Windows.Forms.Label();

      public Unicode()
      {
         this.SuspendLayout();

         this.myLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 50.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
         this.myLabel.Location = new System.Drawing.Point(20, 20);
         this.myLabel.Size = new System.Drawing.Size(800, 800);

         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(800, 200);
         this.Controls.AddRange(new System.Windows.Forms.Control[] {this.myLabel});
         this.Name = "Unicode";
         this.Text = "Unicode";
         this.Load += new System.EventHandler(this.Unicode_Load);
         this.ResumeLayout(false);
      }

      [STAThread]
      static void Main() 
      {
         Application.Run(new Unicode());
      }

      private void Unicode_Load(object sender, System.EventArgs e)
      {
         // English
         char[] english = {'u0057', 'u0065', 'u006C',  
                             'u0063', 'u006F', 'u006D', 'u0065', 'u0020',
                             'u0074', 'u006F', 'u0020' };

         myLabel.Text = new string(english) + "Unicode" + 'u0021';
      }
   }

           
          

   

   using System;
   using System.Drawing;
   using System.Collections;
   using System.ComponentModel;
   using System.Windows.Forms;
   using System.Data;

   public class Unicode : System.Windows.Forms.Form {
      System.Windows.Forms.Label  myLabel = new System.Windows.Forms.Label();

      public Unicode()
      {
         this.SuspendLayout();

         this.myLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 50.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
         this.myLabel.Location = new System.Drawing.Point(20, 20);
         this.myLabel.Size = new System.Drawing.Size(800, 800);

         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(800, 200);
         this.Controls.AddRange(new System.Windows.Forms.Control[] {this.myLabel});
         this.Name = "Unicode";
         this.Text = "Unicode";
         this.Load += new System.EventHandler(this.Unicode_Load);
         this.ResumeLayout(false);
      }

      [STAThread]
      static void Main() 
      {
         Application.Run(new Unicode());
      }

      private void Unicode_Load(object sender, System.EventArgs e)
      {
         // German
         char[] german = {'u0057', 'u0069', 'u006C', 
                            'u006B', 'u006F', 'u006D', 'u006D', 'u0065',
                            'u006E', 'u0020', 'u007A', 'u0075', 'u0020'};

         myLabel.Text = new string(german) + "Unicode" + 'u0021';
      }
   }


           
          

   


   using System;
   using System.Drawing;
   using System.Collections;
   using System.ComponentModel;
   using System.Windows.Forms;
   using System.Data;

   public class Unicode : System.Windows.Forms.Form {
      System.Windows.Forms.Label  myLabel = new System.Windows.Forms.Label();

      public Unicode()
      {
         this.SuspendLayout();

         this.myLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 50.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
         this.myLabel.Location = new System.Drawing.Point(20, 20);
         this.myLabel.Size = new System.Drawing.Size(800, 800);

         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(800, 200);
         this.Controls.AddRange(new System.Windows.Forms.Control[] {this.myLabel});
         this.Name = "Unicode";
         this.Text = "Unicode";
         this.Load += new System.EventHandler(this.Unicode_Load);
         this.ResumeLayout(false);
      }

      [STAThread]
      static void Main() 
      {
         Application.Run(new Unicode());
      }

      private void Unicode_Load(object sender, System.EventArgs e)
      {
         // French
         char[] french = { 'u0042', 'u0069', 'u0065', 
                            'u006E', 'u0076', 'u0065', 'u006E', 'u0075',
                            'u0065', 'u0020', 'u0061', 'u0075', 'u0020' };


         myLabel.Text = new string(french) + "Unicode" + 'u0021';
      }
   }

           
          

   
 

using System;
using System.Drawing;
using System.Windows.Forms;
   
class SimpleTreeView: Form
{
     public static void Main()
     {
          Application.Run(new SimpleTreeView());
     }
     public SimpleTreeView()
     {
          Text = "Simple Tree View";
   
          TreeView tree = new TreeView();
          tree.Parent = this;
          tree.Dock = DockStyle.Fill;
   
          tree.Nodes.Add("Animal");
          tree.Nodes[0].Nodes.Add("A");
          tree.Nodes[0].Nodes[0].Nodes.Add("A1");
          tree.Nodes[0].Nodes[0].Nodes.Add("A2");
          tree.Nodes[0].Nodes[0].Nodes.Add("A3");
          tree.Nodes[0].Nodes.Add("B");
          tree.Nodes[0].Nodes[1].Nodes.Add("B1");
          tree.Nodes[0].Nodes[1].Nodes.Add("B2");
          tree.Nodes[0].Nodes.Add("C");
          tree.Nodes[0].Nodes[2].Nodes.Add("C1");
          tree.Nodes[0].Nodes[2].Nodes.Add("C2");
          tree.Nodes[0].Nodes[2].Nodes.Add("C3");
          tree.Nodes.Add("D");
          tree.Nodes[1].Nodes.Add("D1");
          tree.Nodes[1].Nodes.Add("D2");
          tree.Nodes[1].Nodes.Add("D3");
          tree.Nodes.Add("E");
          tree.Nodes[2].Nodes.Add("E1");
          tree.Nodes[2].Nodes.Add("E2");
          tree.Nodes[2].Nodes.Add("E3");
     }
}

    

   
 

using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
   
class DirectoryTreeView: TreeView
{
     public DirectoryTreeView()
     {
          ImageList = new ImageList();
          ImageList.Images.Add(new Bitmap(GetType(), "FLOPPY.BMP"));
          ImageList.Images.Add(new Bitmap(GetType(), "FOLD.BMP"));
          ImageList.Images.Add(new Bitmap(GetType(), "OPENFOLD.BMP"));
          RefreshTree();
     }
     public void RefreshTree()
     {
          BeginUpdate();
          Nodes.Clear();
          string[] astrDrives = Directory.GetLogicalDrives();
   
          foreach (string str in astrDrives)
          {
               TreeNode tnDrive = new TreeNode(str, 0, 0);
               Nodes.Add(tnDrive);
               AddDirectories(tnDrive);
   
               if (str == "C:")
                    SelectedNode = tnDrive;
          }
          EndUpdate();
     }
     void AddDirectories(TreeNode tn)
     {
          tn.Nodes.Clear();
   
          string          strPath = tn.FullPath;
          DirectoryInfo   dirinfo = new DirectoryInfo(strPath);
          DirectoryInfo[] adirinfo;
   
          adirinfo = dirinfo.GetDirectories();
   
          foreach (DirectoryInfo di in adirinfo)
          {
               TreeNode tnDir = new TreeNode(di.Name, 1, 2);
               tn.Nodes.Add(tnDir);
          }
     }
     protected override void OnBeforeExpand(TreeViewCancelEventArgs tvcea)
     {
          base.OnBeforeExpand(tvcea);
   
          BeginUpdate();
   
          foreach (TreeNode tn in tvcea.Node.Nodes)
               AddDirectories(tn);
   
          EndUpdate();
     }
}

class DirectoriesAndFiles: Form
{
     DirectoryTreeView dirtree;
     Panel             panel;
     TreeNode          tnSelect;
   
     public static void Main()
     {
          Application.Run(new DirectoriesAndFiles());
     }
     public DirectoriesAndFiles()
     {
          Text = "Directories and Files";
          BackColor = SystemColors.Window;
          ForeColor = SystemColors.WindowText;
   
          panel = new Panel();
          panel.Parent = this;
          panel.Dock = DockStyle.Fill;
          panel.Paint += new PaintEventHandler(PanelOnPaint);
   
          Splitter split = new Splitter();
          split.Parent = this;
          split.Dock = DockStyle.Left;
          split.BackColor = SystemColors.Control;
   
          dirtree = new DirectoryTreeView();
          dirtree.Parent = this;
          dirtree.Dock = DockStyle.Left;
          dirtree.AfterSelect += new TreeViewEventHandler(DirectoryTreeViewOnAfterSelect);
   
          Menu = new MainMenu();
          Menu.MenuItems.Add("View");
   
          MenuItem mi = new MenuItem("Refresh", new EventHandler(MenuOnRefresh), Shortcut.F5);
          Menu.MenuItems[0].MenuItems.Add(mi);
     }
     void DirectoryTreeViewOnAfterSelect(object obj, TreeViewEventArgs tvea)
     {
          tnSelect = tvea.Node;
          panel.Invalidate();
     }
     void PanelOnPaint(object obj, PaintEventArgs pea)
     {
          if (tnSelect == null)
               return;
   
          Panel         panel     = (Panel) obj;
          Graphics      grfx      = pea.Graphics;
          DirectoryInfo dirinfo   = new DirectoryInfo(tnSelect.FullPath);
          FileInfo[]    afileinfo;
          Brush         brush     = new SolidBrush(panel.ForeColor);
          int           y         = 0;
   
          afileinfo = dirinfo.GetFiles();
          foreach (FileInfo fileinfo in afileinfo)
          {
               grfx.DrawString(fileinfo.Name, Font, brush, 0, y);
               y += Font.Height;
          }
     }
     void MenuOnRefresh(object obj, EventArgs ea)
     {
          dirtree.RefreshTree();
     }
}

    

   

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald

Publisher: Apress
ISBN: 1590590457
*/

using System.IO;

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace DirectoryTreeHost
{
    /// <summary>
    /// Summary description for DirectoryTreeHost.
    /// </summary>
    public class DirectoryTreeHost : System.Windows.Forms.Form
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public DirectoryTreeHost()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            // 
            // DirectoryTreeHost
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Name = "DirectoryTreeHost";
            this.Text = "DirectoryTreeHost";
            this.Load += new System.EventHandler(this.DirectoryTreeHost_Load);

        }
        #endregion

        private void DirectoryTreeHost_Load(object sender, System.EventArgs e)
        {
            DirectoryTree dirTree = new 
                DirectoryTree();
            dirTree.Size = new Size(this.Width - 30, this.Height - 60);
            dirTree.Location = new Point(5, 5);
            dirTree.Drive = Char.Parse("C");
            this.Controls.Add(dirTree);

        }

        public static void Main()
        {
            Application.Run(new DirectoryTreeHost());
        }
    }
    public class DirectoryTree : TreeView
    {
        public delegate void DirectorySelectedDelegate(object sender,
            DirectorySelectedEventArgs e);
        public event DirectorySelectedDelegate DirectorySelected;
        
        private Char drive;
        public Char Drive
        {
            get
            {
                return drive;
            }
            set
            {
                drive = value;
                RefreshDisplay();
            }
        }
        
        // This is public so a Refresh can be triggered manually.
        public void RefreshDisplay()
        {
            // Erase the existing tree.
            this.Nodes.Clear();
            
            // Set the first node.
            TreeNode rootNode = new TreeNode(drive + ":");
            this.Nodes.Add(rootNode);
            
            // Fill the first level and expand it.
            Fill(rootNode);
            this.Nodes[0].Expand();
        }
        
        private void Fill(TreeNode dirNode)
        {
            DirectoryInfo dir = new DirectoryInfo(dirNode.FullPath);
            
            // An exception could be thrown in this code if you don&#039;t
            // have sufficient security permissions for a file or directory.
            // You can catch and then ignore this exception.
            
            foreach (DirectoryInfo dirItem in dir.GetDirectories())
            {
                // Add node for the directory.
                TreeNode newNode = new TreeNode(dirItem.Name);
                dirNode.Nodes.Add(newNode);
                newNode.Nodes.Add("*");
            }
        }
        
        protected override void OnBeforeExpand(TreeViewCancelEventArgs e)
        {
            base.OnBeforeExpand(e);

            // If a dummy node is found, remove it and read the real directory list.
            if (e.Node.Nodes[0].Text == "*")
            {
                e.Node.Nodes.Clear();
                Fill(e.Node);
            }
        }
        
        protected override void OnAfterSelect(TreeViewEventArgs e)
        {
            base.OnAfterSelect(e);
            
            // Raise the DirectorySelected event.
            if (DirectorySelected != null)
            {
                DirectorySelected(this,
                    new DirectorySelectedEventArgs(e.Node.FullPath));
            }
        }
    }
    public class DirectorySelectedEventArgs : EventArgs
    {
        public string DirectoryName;

        public DirectorySelectedEventArgs(string directoryName)
        {
            this.DirectoryName = directoryName;
        }
    }



}